diff --git a/app/queue/redis/ApprovalCallback.php b/app/queue/redis/ApprovalCallback.php
index 58c0a1f..14a4670 100644
--- a/app/queue/redis/ApprovalCallback.php
+++ b/app/queue/redis/ApprovalCallback.php
@@ -20,6 +20,7 @@ class ApprovalCallback implements Consumer
             match ($data['flow_type']) {
                 'stock_orders' => $this->approvalStockOrders($data),
                 'purchase_orders' => $this->approvalPurchaseOrders($data),
+                'stock_orders_nullify' => '',
                 default => throw new BusinessException('未知的审批类型，无法执行回调操作')
             };
             return true;